Civil Engineering Reference
In-Depth Information
TABLE 13.5
Example of Pile-Driving Information that Should Be Recorded for the Project
Pile-driving record
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Date: March 7, 2001
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Project name and number: Grossmont Healthcare, F.N. 22132.06
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Name of contractor: Foundation Pile Inc.
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Type of pile and date of casting: Precast concrete, cast 2/6/01
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Pile location: See pile-driving records (Table 13.6)
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Sequence of driving in pile group: Not applicable
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Pile dimensions: 12 in by 12 in cross section, lengths vary
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Ground elevation: Varies
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Elevation of tip after driving: See total depth on the driving record
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Final tip and cutoff elevation of pile after driving pile group: Not applicable
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Records of redriving: No redriving
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Elevation of splices: No splices
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Type, make, model, and rated energy of hammer: D30 DELMAG
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Weight and stroke of hammer: Piston weight
6615 lb. Double-action hammer, maximum stroke
9 ft
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Type of pile-driving cap used: Wood blocks.
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Cushion material and thickness: Wood blocks approximately 1 ft thick
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Actual stroke and blow rate of hammer: Varies, but stroke did not exceed 9 ft
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Pile-driving start and finish times; and total driving time: See driving record (Table 13.6)
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Time, pile tip elevation, and reason for interruptions: No interruptions
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Record of number of blows per foot: See driving record (Table 13.6)
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Pile deviations from location and plumb: No deviations
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Record preboring, jetting, or special procedures used: No preboring, jetting, or special procedures
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Record of unusual occurrences during pile driving: None
TABLE 13.6
Actual Blow Count Record Obtained During Driving of
a Prestressed Concrete Pile
Blow count record
Location: M-14.5
Start time:
8:45 a.m.
End time:
8:58 a.m.
Blows per foot:
0 to 5 ft
1, 2, 3, 5, 9
5 to 10 ft
9, 9, 11, 10, 9
10 to 15 ft
7, 5, 4, 3, 2
15 to 20 ft
2, 2, 1, 1, 1
1, 1, 1, 1, 1
20 to 25 ft
25 to 30 ft
1, 1 for 2 ft, 1, 2
30 ft
8, 50 for 10 in
Total depth
31.8 ft
